I would agree with Dr. Eppley regarding recommendations for injectable filler such as Juvederm or Voluma XC. Fat grafting to this area is also a reasonable option for treatment with very little to no downtime.
Cost factors vary significantly for a number of good reasons: Prices vary greatly because the surgery itself encompasses a wide range of techniques that can be performed to different extents. My recommendation is to first find the most qualified surgeons where you want the surgery ...
You have beautiful lips and a nice feminine proportionality. If you chin is not recessed, I would stay with the many attractive movie stars and celebrities that are famous for their cleft chin...I have over a dozen patients ask if I could create a cleft chin for them. Beauty is not being average...